System requirements

This page describes the system requirements for k0s.

Minimum memory and CPU requirements

The minimum requirements for k0s detailed below are approximations, and thus your results may vary.

# of Worker nodes	# of Pods	Recommended RAM	Recommended vCPU
up to 10	up to 1000	1-2 GB	1-2 vCPU
up to 50	up to 5000	2-4 GB	2-4 vCPU
up to 100	up to 10000	4-8 GB	2-4 vCPU
up to 500	up to 50000	8-16 GB	4-8 vCPU
up to 1000	up to 100000	16-32 GB	8-16 vCPU
up to 5000	up to 150000	32-64 GB	16-32 vCPU

k0s has the standard Kubernetes limits for the maximum number of nodes, pods, etc. For more details, see the Kubernetes considerations for large clusters.

k0s controller node measured memory consumption can be found below on this page.

It’s recommended to use an SSD for optimal storage performance (cluster latency and throughput are sensitive to storage).

The specific storage consumption for k0s is as follows:

Note: The operating system and application requirements must be considered in addition to the k0s part.

For information on the required ports and protocols, refer to networking.

k0s strives to be as independent from the OS as possible. The current and past external runtime dependencies are documented here.

To run some automated compatiblility checks on your system, use k0s sysinfo.

The following table shows the measured memory consumption in the cluster of one controller node.

Measurement details: